Merge pull request #7 from buildkite-plugins/renovate/buildkite-docker-compose-2.x

Update buildkite plugin docker-compose to v2.2.0

Author: toolmantim

.buildkite/pipeline.yml

@@ -11,5 +11,5 @@ steps:
 
   - label: ":bash: Tests"
     plugins:
-      docker-compose#v2.1.0:
+      docker-compose#v2.2.0:
         run: tests